diff --git a/robot_log_visualizer/file_reader/signal_provider.py b/robot_log_visualizer/file_reader/signal_provider.py
index 41ee3b1..18de7c4 100644
--- a/robot_log_visualizer/file_reader/signal_provider.py
+++ b/robot_log_visualizer/file_reader/signal_provider.py
@@ -73,11 +73,18 @@ def __populate_text_logging_data(self, file_object):
 
                 # New way to store the struct array in robometry https://github.com/robotology/robometry/pull/175
                 if text_ref.shape[0] == len(data[key]["timestamps"]):
+                    # If len(value[text[0]].shape) == 2 then the text contains a string, otherwise it is empty
+                    # We need to manually check the shape to handle the case in which the text is empty
                     data[key]["data"] = [
                         TextLoggingMsg(
                             text="".join(chr(c[0]) for c in value[text[0]]),
                             level="".join(chr(c[0]) for c in value[level[0]]),
                         )
+                        if len(value[text[0]].shape) == 2
+                        else TextLoggingMsg(
+                            text="",
+                            level="".join(chr(c[0]) for c in value[level[0]]),
+                        )
                         for text, level in zip(text_ref, level_ref)
                     ]
 
diff --git a/robot_log_visualizer/ui/gui.py b/robot_log_visualizer/ui/gui.py
index 120cbd2..8bb0f16 100644
--- a/robot_log_visualizer/ui/gui.py
+++ b/robot_log_visualizer/ui/gui.py
@@ -463,7 +463,6 @@ def plotTabBar_currentChanged(self, index):
             # select the item in the tree from the path
             item = self.ui.variableTreeWidget.topLevelItem(0)
             for subpath in path[1:-1]:
-
                 # find the item given its name
                 for child_id in range(item.childCount()):
                     if item.child(child_id).text(0) == subpath:
@@ -558,17 +557,14 @@ def __load_mat_file(self, file_name):
         if not self.meshcat_provider.load_model(
             self.signal_provider.joints_name, self.signal_provider.robot_name
         ):
+            # if not loaded we print an error but we continue
             msg = "Unable to load the model: "
             if self.meshcat_provider.custom_model_path:
                 msg = msg + self.meshcat_provider.custom_model_path
             else:
                 msg = msg + self.signal_provider.robot_name
 
-            self.logger.write_to_log(
-                "Unable to load the model from: "
-                + self.meshcat_provider.custom_model_path
-            )
-            return
+            self.logger.write_to_log(msg)
 
         # populate tree
         root = list(self.signal_provider.data.keys())[0]